Behind the Headline: Students Over Unions

In his column in today’s New York Times about the strike, Nicholas Kristof complains that the Chicago teachers union seems to be focused on protecting weak performers. He cites a study that looks at the big difference in effectiveness between strong and weak teachers in high-poverty schools and the long-term impact that those teachers have on their students. A reader-friendly version of that study, by Raj Chetty, John Friedman, and Jonah Rockoff, appears in the Summer 2012 issue of Ed Next.